1x and 2x tables - tips

The 1 times table

    1 x 1 = 1
    2 x 1 = 2
    3 x 1 = 3
    4 x 1 = 4
    5 x 1 = 5
    6 x 1 = 6
    7 x 1 = 7
    8 x 1 = 8
    9 x 1 = 9
    10 x 1 = 10

The 2 times table

    1 x 2 = 2
    2 x 2 = 4
    3 x 2 = 6
    4 x 2 = 8
    5 x 2 = 10
    6 x 2 = 12
    7 x 2 = 14
    8 x 2 = 16
    9 x 2 = 18
    10 x 2 = 20

Have a look at these timesavers.

If a number ends in 0, 2, 4, 6, or 8 it is even. A number is even when it can be divided by two without a remainder.

2 divided by 2 is 1.
10 divided by 2 is 5.
All even numbers can be divided by 2.

To find out if a number is in the 2 times table, look at the digit at the end.
1 357 318 is a multiple of 2 because the digit at the end is 8, which is even.

Multiplying a number by 2 is the same as DOUBLING it.
Double 6 is the same as 6 x 2, which equals 12.

Dividing a number by 2 is the same as HALVING it.
Half of 10 is the same as 10 ÷ 2 which equals 5.